All 15 horses injected with steroids at the Godolphin stables have been banned for the next six months.
There is no word yet on the punishment from the British Horseracing Authority for the operation's trainer Mahmood Al Zarooni.
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Nearly 38,000 runners will hope to complete Sunday's London Marathon making it the biggest event in its 35-year history.
Rain across central Britain with longer, intense downpours with thunder in places this evening. A lucky few will stay sunny and dry.
Planning on going to the London Marathon tomorrow? Read our handy guide first!